摘要
采用80S-G低合金钢焊丝焊接C4镍基合金/X60低合金钢异种金属。利用扫描电镜观察C4镍基合金母材/80S-G焊缝之间熔合区微观组织,能谱分析该区元素分布。结果表明,C4镍基合金母材稀释进入80S-G低合金钢焊缝内,致使Ni、Cr、Mo元素质量分数从部分熔化区到过渡区缓慢降低,Fe元素质量分数增加。微观组织从单相奥氏体组织逐渐转化为奥氏体与铁素体组成的混合组织,在此区域中弥散分布少量析出相粒子。
The dissimilar metals of C4 Ni-base alloy and X60 steel were welded using 80S-G low alloy steel as filler material. Microstructure and distribution of alloying elements in the fusion zone were observed and analyzed by scanning electronic microscopy （SEM） and energy spectrum analysis （EDS）. The results show that the mass fraction of Cr, Ni, Mo gradually decreases and the mass fraction of Fe increases from partially melted zone to transition zone. Microstructure transition from a single austenite phase to an austenite- ferrite two phase structure can be observed in fusion zone with small amount of precipitated phase particles.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第2期67-71,共5页
Transactions of Materials and Heat Treatment
基金
河北省自然科学基金(E2010000301)
河北大学自然科学研究计划项目(2009-153)
河北大学大学生科技创新项目(2011073)
河北省高等学校科学研究计划项目(Z2012168)
保定市科学计划研究与发展指导计划项目(12ZG018)
关键词
异种金属焊接
微观组织
元素分布
熔合区
dissimilar metal weld
microstructure
element distribution
fusion zone
